We don't know whether the victim in this case was arguing for or against the value of higher education, but I will go ahead and speculate that it was the former. Not that I think more education makes people less violent, but there really only seem like two options here:

1. "Dude, you don't even have a college degree." <stabbed>
2. "Dude, you go to college." <stabbed>

Well, now that I say that, here are two more:

1. "Dude, you don't even have a college degree." <stabbed>
2. "Dude, you borrowed $100k to go to college, and you still don't have a job." <stabbed>

I guess we just don't have enough information to say.

At last report, the victim had been treated for a "fairly large laceration" at George Washington University Hospital, and his knife-wielding debate opponent was still at large.